1. (); 2. (); 3. (); 4. ; 5. .
42. , , . .
a ∧ b = b ∧ a | a ∨ b = b ∨ a | |
a ∧ (b ∧ c) = (a ∧ b) ∧ c | a ∨ (b ∨ c) = (a ∨ b) ∨ c | |
a ∨ (b ∧ c) = (a ∨ b) ∧ (a ∨ c) | a ∧ (b ∨ c) = (a ∧ b) ∨ (a ∧ c) | |
(a ∧ b) = a ∨ b | (a ∨ b) = a ∧ b | |
a ∧ a = a | a ∨ a = a | |
a ∧ (a ∨ b) = a | a ∨ (a ∧ b) = a | |
(a ∨ b) ∧ (a ∨ b) = b | (a ∧ b) ∨ (a ∧ b) = b | |
a ∧ a = 0 | a ∨ a = 1 | |
1 ∧ a = a, 0 ∧ a = 0 | 1 ∨ a = 1, 0 ∨ a = a | |
(a)=a |
43. , . , . , : (0, , false) (1, , true). .
: .
, .
. , , , , , , .
.
: , . , , .
44. ( ) , .
1. . x n c. 2. Z () X Y, Z () X Y. i - X, Y, Z xi, yi, zi. xi + yi = zi. . |
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45. , . (. variance) . . , , ́ ́ , ́ ́ . , , . :
, , . : c σ, c x, . , :
46. , , .
, . , .
, , .
, , , h , i .
, , h, . , , () . i i , , .. .
, , , . i , i . , .
47. ( ) ( , ). . , ( ). , , , , .
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50. :
r(s)=1- [(6* c d(i)^2]/[n*(n^2-1)]; d(i)^2-